<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8">
<title>The div shouldn't pull the html element's background color through the body background. There should be no red on this page.</title>

<style>

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

html {
  background-color: red;
}

body {
  transform: translateX(0.1px);
  background-color: white;
  box-sizing: border-box;
  padding: 10px;
}

div {
  position: relative;
  width: 50px;
  height: 50px;
  box-sizing: border-box;
  border: 1px solid black;
  animation: leftFrom0To100 steps(1,end) 20000s alternate infinite;
}

@keyframes leftFrom0To100 {
  from { left: 0px; }
  to { left: 100px; }
}

</style>

<div></div>
